System of insulation for high-voltage electric conductors.



F. M- LOCKE.

SYSTEM OF INSULATION FOR HIGH VOLTAGE ELECTRIC GONDUGTORS. APPLICATION FILED APR. 9; 1907.

Patented'Apr. 13, 1909-.

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Flilil) .\i. LOG-RE, OF

VICTOR, NEW YORK.

SYSTEM OF INSULATION FUR HIGH-VOLTAGE ELECTRIC CONDUCTORS.

Applicaiion filed April 9,

High-Voltage ElectricConductors, o'l which the following, taken in connection with the accompanying drawings, is a 'l'ull,,clear., and exact description.

This inventirn'i relates to certain improvements in system of insulation 'for high vol tage electric conductors, the generic object of which, like that of In pendingapplications .\'o. 359,442, filed Feb. 26, 1907 and tiled March ill), 1907, is to permit the installation of any number of coz parath-ely small insulators between the ca: ductor and the medium in such manner rhat the sections of each insulator a pressed tothe gether and held against separation r their supporting mediums. v

In my application No. 359,442 the insula tors are suspended one from the other in succession by suitable hangers, the first. one ol the series being suspended l'r'om a main support and the last-one ol' the series carrying a hanger lor the conductor. .ln my application 363,373, filed March 20, 1907, i have shown a series of insulators, each com posed of a series of petticoat sections nested one within the other, the bottom section of by a hanger which is carried by the top section of th. next preceding insulator ot' the series nearest to the main support.

The generic object of this system is to arrange and connect a series of insulators in such manner that. the resultant insulatingresistance is equal to or exceeds that of any one insulator oi' the series multiplied by the number 01' insulators of such series and at: the same time to render the surface leakage, uncture test, arcing distance jand mocha-1 ical strength practically unlimited.

The specific object of my p'i; sent invention aside from its generic use, as previouslv stat-ed, is to anchor the end insulators ol' the series to suitable supports either fixed or movable and atthe same time to tie t entire series trigether in such manner tl. r the sections of each will be automatically drawn or pressed together and held in such relation without special securing means l;c tween then'r so that the individual insulator Specification of Letters Patent.

weightof the conductm' and insulators and Patented April 13, 1909.

1907. Serial No. 367,251.

ma be built up indefinitely or the number of insulators increased or diminished to correspond to the Voltage of the current carried by the conductor.

Another specific use of this construction to the main supports and supporting the conductor intermediate the ends of the sys tern, the end tie pieces may be adjusted to draw the insulator sections in close relation to each other thereby tensioning the parts of the entire system to better resist-lateral strains and at the same time to cause such strains to more firmly bind the parts together. I

It is evident that the foregoing objects may be carried out by various forms oi devices I have, therefore, shown and described dilierent forms or systems which at the present time appear to he most practicable.

In the drawiugs--Figure l is an elevation partly in sect-ion of a system-oi insulation in which a series of insulators are supported side by side bet-ween two niain su'pports, the center insulator carrying the conductor. Fig. 2 is an elevation-oi a modified system ol' insulation in which the insulators are supmain supports. Fig. 3 is an elevation, on reduced scale, of. a still further modified system of insulation for supporting a plural ity of, in this instance, three conductors.

In FigJl l-have shown a pair of main supports as cross arms 1- which may be fixed or movable and to which are secured suit-able center pins 2 for supporting insulators 3-, said insulators being of the pctticoat type made in sections brought together, the bottom section having. :1 central socket into which the center pins -2- are inserted. The top section of each insulator --3 supports one end of a bracket or tic-piece -4', the opposite ends of said tic pieces being, in this instance, joined together and carrying 5 a center. pin 5 which is inserted into the bottom of and supports a simi insulator "6% also com posed of sections, tnc top sec tion of the insulator -6 t wiring and supporting a suitable electric conductor --7-. The outer ends of the arms --1--- may be secured in any desired manner to the top sections of the insulators -3 and in this instance are provided with caps -8-- l fitting over and upon thereduced upper eniis is that" by tying the end hangers or tie pieces ported one above the ot-her between two the adjacent insulator by any suitable means.

:' tions of the insulators together.

mechanical strength area exposed to the elements, the resistance; 6.0-"

retain'them in operative position relatively pair of supports 10 located one above the other and a series of insulators *3 the other insulators 3 is suspended bya cross arm -or'support10 thislatter eye adjacent in'sulator, .the upper ends of said .but it is evident that each insulator is held draw' the sections of such insulator together and that I of the eye bolts 13 the insulator'sections of any subjected to tensile of the insulators 3-. It is, therefore, ap-. parent that the Weight of the Wire and intermediate insulator or insulators together with the supports therefor are borne by the top sections of the end insulators and that in all of these insulators the pressure and mechanical resistance is applied to opposite ends or sections of the insulator tending to to each other and to their supporting mediums. 4

The system shown in Fig. 2 comprises a also supported one above the other between the main supports '10, each insulator large insulators.

being composed of a series of sections nested together. The bottom, section of the upper insulator is supported .by a hanger 1 1 which is suspended-from an eye bolt 14 on the cross 1 arm orsupport '-10., said eye bolt beingv adjustable vertically. Each of hanger -12' fronrtlie top section of the next preceding insulator, the top section of the bottom insulator of the series carrying an additional hanger 13 which is anchored tof an' eye bolt -]4 in the lower bolt being also'adjustable, each. of the hangers 11' and '"l2 is provided with a center pin .15 adapted to enter a socket in the under side of the bottom section of the hangers being secured to the top section er as Wire clamps l6'-.- In this particular systen'i, the electric conductor as 7- is earned by the intermediate hanger 12- between two'adjacentfl-iangers operating to by tightening up on one orthe other are dra'vvnfinto closer relation through the medium-of the hangers, and furthermore by supporting the entire system of parts at opposite endsthereofi: any lateralstrains by winds or excessive tension upon the conductor operates to more-firmly clamp the sec- Itis evident fromthe foregoing description that by combining theinsulators and .the manner described they tively small insulators whichpossess" great with a minimum surface to compression be in'ggreater than the -ten- Z 'sile' strength so that the of the completesy stem is far'inexcess of that system in -which the insulators are mechanical strength l v 1 strains and furthermore I am at hbert ce the insul'atorsany l insulator on the support, aframe supported distance apart and to use any number of insulators between the. conductor and main support. g Y I In addition to the above advantagesit will be observed that by using the smaller and consequentlymore perfect and more homogeneous insulators they are capable of standing a higher puncture test and avoid the usual creeping or (static discharges so common in In other words, the mechanical strength, arcing distance, puncture and static discharge tests are practically un limited.

In Fig. 3 I have shown a system of insulation for a plurality of, in this instance, three wires or conductors, each conduct-or being associated with a separate insulating medium substantially identical With that shown in Fig. 2, the entire system including the cross arms 10 being'shown as mounted upon a tower or pole 20- and although I have shown the Wire -7 as attached to the. in-

termediate tiepiece or connection 12-, said Wires may be supported directly upon I, any one of the insulators or upon anyother' one of the tie pieces.

In each of these systems it will 'be seen that the tie pieces connecting the successive insulators of the series are disposed in intersecting planes, that is they lead from the bottom of one insulator to the top of the next insulator of the series. In this latter system ofinsulation it will be observed that the supporting parts for the conductors are flexibly connected that is, the entire system is flexible to alloWa limited lateral movement in all directions so asto yield under Wind and tension strains of conductors Without liability of unduly straining or breaking the fastenings or hangers. W hat I claim is: 1. system of insulation for high and seriesof insulators arranged in sequence between the supports, and tie pieces connecting the insulators and supports and exerting compression strains upon the insulators. I

. 2; In a system of insulation for high voltage conductors, the combination with suitable supports, and a series of insulators arranged in sequence and each composed-of a plurality of sections nested together, and connections between the supports and insulators exerting compression strains upon the sections of each insulator.

3.' In an insulating system, a support, an

insulator on the support, a frame supported by the insulator, a second frame supporting the first fraine,'the connections between the two frames comprising an insulator attached to one frame and a correspondingoffset poition in the other frame.

4. In an insulating system, a support, an

voitageconductors comprising suitable supports,

by the insulator, a second frame supported by the first frame, the connections between the two frames comprising an insulator attached to one frame and corresponding offset portion in the other frame to hold the frames in proper rclative position.

5. Insulating means comprising a support, an insulator on the support, a frame supported on the insulator, and a second frame support-ed from the first frame, the latter frame having two insulators attached thereto one between said frames.

6. Insulating means comprising a support, aninsuletor on the support, at frame supported on the insulator, a second fro-me supported fromthe first frame, said fremes being disposed one within the other and at an angle to each other the latter frame ha"- ing two insulators attached thereto one between said frames, and an electric conductor attached toone'of the latter insulators.

Y. Insulating means comprising a. support, an insulator on, the support,- a irame ,sup-' ported on the insulator, and 51V second frame supported fromthe first frame, said frames being dispo'sedone within'the other and at an englei'p'each other the latterframe'heving two insulators attached'thereto one between said'fraines, and the two insulators being zittached to the frame in practically the same plane.

8. An insulator comprisinge series of petticeet insulators hevmg'their petticoets extending in the same direction, and frames attached to two of seidinsulators and uniting their opposite ends, said frames being errnngedat an angle to and one-within each other and each supported upon an insulator. 9x Insulating means comprising a support,

an insulator onv the support, a frame supported on the insulator, a second lrame supported from the first frame, the letter having two insulators etteched thereto, thesecond frame being supportedu on one of said insulators, both insulators raving pettlcoats and one .of the insulators being interposed between said frames.

10. In insulator system, a. frame having two insulators thereon, one adaptedto'hold an electric conductor, the other to insulate its support: a second frame arranged at on angle to the first frame and forming the said support, and a third insulator forming a supportfor the second frame, all of-said insulators being in vertical alinement.

11. In an insulating system, three insulators' arranged in vertical alinement with each other: one acting indirectly n s-a support for the other two end two frames one of the latter being supported by the top of an insuletor and the other by the bottom of the insulator.

12. Insulating means comprising a support, an insulator on the s upport,'e frame supported on the insulator, and a second frame supported from the first frame: the latter frame having two insulators attached thereto one between said frames, the' frames standing in intersecting right angle planes.

1.3. A system of insulation for high voltage electric conductors comprising suitable supports, a series of insulators arranged in se uence between the supports, tie pieces flexib y connected to the supports and to the end insulators of the system, additional tie 

